<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>背景方位名词应用1</title>
    <style>
        h3{
            width: 113px;
            height: 40px;
            background-color: red;
            font-size: 12px;
            font-weight: 400;
            /* 垂直居中 行高等于高度 */
            line-height: 40px;
            background-image: url(img/title_sprite.png);
            /* 背景不平铺 */
            background-repeat: no-repeat;

            /* 水平靠左对齐，垂直居中对齐 */
            background-position: left center;
            /* 首行缩进 */
            text-indent: 2em;
        }
    </style>
</head>
<body>
    <h3>
        成长守护平台
    </h3>
</body>
</html>